28136448000 has 672 divisors, whose sum is σ = 105255925632. Its totient is φ = 7225344000.

The previous prime is 28136447959. The next prime is 28136448023. The reversal of 28136448000 is 84463182.

28136448000 is a `hidden beast` number, since 2 + 8 + 1 + 3 + 644 + 8 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 396287965 + ... + 396288035.

Almost surely, 2^28136448000 is an apocalyptic number.

28136448000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28136448000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52627962816).

28136448000 is an abundant number, since it is smaller than the sum of its proper divisors (77119477632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28136448000 is an equidigital number, since it uses as much as digits as its factorization.

28136448000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 28136448000 in words is "twenty-eight billion, one hundred thirty-six million, four hundred forty-eight thousand".